<template>
  <div class="user-info-head" @click="editCropper()">
    <img :src="options.img" title="点击上传头像" class="img-circle img-lg" />
    <el-dialog
      :title="title"
      v-model="open"
      width="800px"
      append-to-body
      @opened="modalOpened"
      @close="closeDialog"
    >
      <el-row>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <vue-cropper
            ref="cropper"
            :img="options.img"
            :info="true"
            :autoCrop="options.autoCrop"
            :autoCropWidth="options.autoCropWidth"
            :autoCropHeight="options.autoCropHeight"
            :fixedBox="options.fixedBox"
            :outputType="options.outputType"
            @real-time="realTime"
            v-if="visible"
          />
        </el-col>
        <el-col :xs="24" :md="12" :style="{ height: '350px' }">
          <div class="avatar-upload-preview">
            <img :src="options.previews.url" :style="options.previews.img" />
          </div>
        </el-col>
      </el-row>
      <br />
      <el-row>
        <el-col :lg="2" :md="2">
          <el-upload
            action="#"
            :http-request="requestUpload"
            :show-file-list="false"
            :before-upload="beforeUpload"
          >
            <el-button>
              选择
              <el-icon class="el-icon--right"><Upload /></el-icon>
            </el-button>
          </el-upload>
        </el-col>
        <el-col :lg="{ span: 1, offset: 2 }" :md="2">
          <el-button icon="Plus" @click="changeScale(1)" />
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="Minus" @click="changeScale(-1)" />
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="RefreshLeft" @click="rotateLeft()" />
        </el-col>
        <el-col :lg="{ span: 1, offset: 1 }" :md="2">
          <el-button icon="RefreshRight" @click="rotateRight()" />
        </el-col>
        <el-col :lg="{ span: 2, offset: 6 }" :md="2">
          <el-button type="primary" @click="uploadImg()">提 交</el-button>
        </el-col>
      </el-row>
    </el-dialog>
  </div>
</template>

<script setup>
  import { ref, getCurrentInstance, reactive } from 'vue';
  import 'vue-cropper/dist/index.css';
  import { VueCropper } from 'vue-cropper';
  import { uploadAvatar } from '@/api/system/user';
  import useUserStore from '@/store/modules/user';

  const userStore = useUserStore();
  const { proxy } = getCurrentInstance();

  const open = ref(false);
  const visible = ref(false);
  const title = ref('修改头像');

  //图片裁剪数据
  const options = reactive({
    img: userStore.avatar, // 裁剪图片的地址
    autoCrop: true, // 是否默认生成截图框
    autoCropWidth: 200, // 默认生成截图框宽度
    autoCropHeight: 200, // 默认生成截图框高度
    fixedBox: true, // 固定截图框大小 不允许改变
    outputType: 'png', // 默认生成截图为PNG格式
    filename: 'avatar', // 文件名称
    previews: {}, //预览数据
  });

  /** 编辑头像 */
  function editCropper() {
    open.value = true;
  }
  /** 打开弹出层结束时的回调 */
  function modalOpened() {
    visible.value = true;
  }
  /** 覆盖默认上传行为 */
  function requestUpload() {}
  /** 向左旋转 */
  function rotateLeft() {
    proxy.$refs.cropper.rotateLeft();
  }
  /** 向右旋转 */
  function rotateRight() {
    proxy.$refs.cropper.rotateRight();
  }
  /** 图片缩放 */
  function changeScale(num) {
    num = num || 1;
    proxy.$refs.cropper.changeScale(num);
  }
  /** 上传预处理 */
  function beforeUpload(file) {
    if (file.type.indexOf('image/') == -1) {
      proxy.$modal.msgError('文件格式错误，请上传图片类型,如：JPG，PNG后缀的文件。');
    } else {
      const reader = new FileReader();
      reader.readAsDataURL(file);
      reader.onload = () => {
        options.img = reader.result;
        options.filename = file.name;
      };
    }
  }
  /** 上传图片 */
  function uploadImg() {
    proxy.$refs.cropper.getCropBlob((data) => {
      let formData = new FormData();
      formData.append('avatarfile', data, options.filename);
      uploadAvatar(formData).then((response) => {
        open.value = false;
        options.img = import.meta.env.VITE_APP_BASE_API + response.imgUrl;
        userStore.avatarRaw = options.img;
        proxy.$modal.msgSuccess('修改成功');
        visible.value = false;
      });
    });
  }
  /** 实时预览 */
  function realTime(data) {
    options.previews = data;
  }
  /** 关闭窗口 */
  function closeDialog() {
    options.img = userStore.avatar;
    options.visible = false;
  }
</script>

<style lang="scss" scoped>
  .user-info-head {
    display: inline-block;
    position: relative;
    height: 120px;
  }

  .user-info-head:hover::after {
    content: '+';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    background: rgb(0 0 0 / 50%);
    color: #eee;
    font-size: 24px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-style: normal;
    line-height: 110px;
    cursor: pointer;
  }
</style>
